Code for autonomous rover for Sparkfun AVC. DataBus won 3rd in 2012 and the same code was used on Troubled Child, a 1986 Jeep Grand Wagoneer to win 1st in 2014.

Dependencies:   mbed Watchdog SDFileSystem DigoleSerialDisp

MAVlink/include/common/mavlink_msg_param_set.h

Committer:
shimniok
Date:
2013-05-27
Revision:
0:a6a169de725f

File content as of revision 0:a6a169de725f:

// MESSAGE PARAM_SET PACKING

#define MAVLINK_MSG_ID_PARAM_SET 23

typedef struct __mavlink_param_set_t 
{
    uint8_t target_system; ///< System ID
    uint8_t target_component; ///< Component ID
    int8_t param_id[15]; ///< Onboard parameter id
    float param_value; ///< Onboard parameter value

} mavlink_param_set_t;

#define MAVLINK_MSG_PARAM_SET_FIELD_PARAM_ID_LEN 15


/**
 * @brief Pack a param_set message
 * @param system_id ID of this system
 * @param component_id ID of this component (e.g. 200 for IMU)
 * @param msg The MAVLink message to compress the data into
 *
 * @param target_system System ID
 * @param target_component Component ID
 * @param param_id Onboard parameter id
 * @param param_value Onboard parameter value
 * @return length of the message in bytes (excluding serial stream start sign)
 */
static inline uint16_t mavlink_msg_param_set_pack(uint8_t system_id, uint8_t component_id, mavlink_message_t* msg, uint8_t target_system, uint8_t target_component, const int8_t* param_id, float param_value)
{
    uint16_t i = 0;
    msg->msgid = MAVLINK_MSG_ID_PARAM_SET;

    i += put_uint8_t_by_index(target_system, i, msg->payload); // System ID
    i += put_uint8_t_by_index(target_component, i, msg->payload); // Component ID
    i += put_array_by_index(param_id, 15, i, msg->payload); // Onboard parameter id
    i += put_float_by_index(param_value, i, msg->payload); // Onboard parameter value

    return mavlink_finalize_message(msg, system_id, component_id, i);
}

/**
 * @brief Pack a param_set message
 * @param system_id ID of this system
 * @param component_id ID of this component (e.g. 200 for IMU)
 * @param chan The MAVLink channel this message was sent over
 * @param msg The MAVLink message to compress the data into
 * @param target_system System ID
 * @param target_component Component ID
 * @param param_id Onboard parameter id
 * @param param_value Onboard parameter value
 * @return length of the message in bytes (excluding serial stream start sign)
 */
static inline uint16_t mavlink_msg_param_set_pack_chan(uint8_t system_id, uint8_t component_id, uint8_t chan, mavlink_message_t* msg, uint8_t target_system, uint8_t target_component, const int8_t* param_id, float param_value)
{
    uint16_t i = 0;
    msg->msgid = MAVLINK_MSG_ID_PARAM_SET;

    i += put_uint8_t_by_index(target_system, i, msg->payload); // System ID
    i += put_uint8_t_by_index(target_component, i, msg->payload); // Component ID
    i += put_array_by_index(param_id, 15, i, msg->payload); // Onboard parameter id
    i += put_float_by_index(param_value, i, msg->payload); // Onboard parameter value

    return mavlink_finalize_message_chan(msg, system_id, component_id, chan, i);
}

/**
 * @brief Encode a param_set struct into a message
 *
 * @param system_id ID of this system
 * @param component_id ID of this component (e.g. 200 for IMU)
 * @param msg The MAVLink message to compress the data into
 * @param param_set C-struct to read the message contents from
 */
static inline uint16_t mavlink_msg_param_set_encode(uint8_t system_id, uint8_t component_id, mavlink_message_t* msg, const mavlink_param_set_t* param_set)
{
    return mavlink_msg_param_set_pack(system_id, component_id, msg, param_set->target_system, param_set->target_component, param_set->param_id, param_set->param_value);
}

/**
 * @brief Send a param_set message
 * @param chan MAVLink channel to send the message
 *
 * @param target_system System ID
 * @param target_component Component ID
 * @param param_id Onboard parameter id
 * @param param_value Onboard parameter value
 */
#ifdef MAVLINK_USE_CONVENIENCE_FUNCTIONS

static inline void mavlink_msg_param_set_send(mavlink_channel_t chan, uint8_t target_system, uint8_t target_component, const int8_t* param_id, float param_value)
{
    mavlink_message_t msg;
    mavlink_msg_param_set_pack_chan(mavlink_system.sysid, mavlink_system.compid, chan, &msg, target_system, target_component, param_id, param_value);
    mavlink_send_uart(chan, &msg);
}

#endif
// MESSAGE PARAM_SET UNPACKING

/**
 * @brief Get field target_system from param_set message
 *
 * @return System ID
 */
static inline uint8_t mavlink_msg_param_set_get_target_system(const mavlink_message_t* msg)
{
    return (uint8_t)(msg->payload)[0];
}

/**
 * @brief Get field target_component from param_set message
 *
 * @return Component ID
 */
static inline uint8_t mavlink_msg_param_set_get_target_component(const mavlink_message_t* msg)
{
    return (uint8_t)(msg->payload+sizeof(uint8_t))[0];
}

/**
 * @brief Get field param_id from param_set message
 *
 * @return Onboard parameter id
 */
static inline uint16_t mavlink_msg_param_set_get_param_id(const mavlink_message_t* msg, int8_t* r_data)
{

    memcpy(r_data, msg->payload+sizeof(uint8_t)+sizeof(uint8_t), 15);
    return 15;
}

/**
 * @brief Get field param_value from param_set message
 *
 * @return Onboard parameter value
 */
static inline float mavlink_msg_param_set_get_param_value(const mavlink_message_t* msg)
{
    generic_32bit r;
    r.b[3] = (msg->payload+sizeof(uint8_t)+sizeof(uint8_t)+15)[0];
    r.b[2] = (msg->payload+sizeof(uint8_t)+sizeof(uint8_t)+15)[1];
    r.b[1] = (msg->payload+sizeof(uint8_t)+sizeof(uint8_t)+15)[2];
    r.b[0] = (msg->payload+sizeof(uint8_t)+sizeof(uint8_t)+15)[3];
    return (float)r.f;
}

/**
 * @brief Decode a param_set message into a struct
 *
 * @param msg The message to decode
 * @param param_set C-struct to decode the message contents into
 */
static inline void mavlink_msg_param_set_decode(const mavlink_message_t* msg, mavlink_param_set_t* param_set)
{
    param_set->target_system = mavlink_msg_param_set_get_target_system(msg);
    param_set->target_component = mavlink_msg_param_set_get_target_component(msg);
    mavlink_msg_param_set_get_param_id(msg, param_set->param_id);
    param_set->param_value = mavlink_msg_param_set_get_param_value(msg);
}